DIFF Subgroup
F25B 41/31 Expansion valves
Introduced: January 2021
Full Title
Fluid-circulation arrangements > Expansion means; Dispositions thereof > Expansion valves
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
IPC defines codes here since 2021.
Child Classifications
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- F25B 41/32 having flow rate limiting means other than the valve member, e.g. having bypass orifices in the valve body since 2021 IPC+CPC Available in IPC and CPC
- F25B 41/33 with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant since 2021 IPC+CPC Available in IPC and CPC
- F25B 41/34 with the valve member being actuated by electric means, e.g. by piezoelectric actuators since 2021 IPC+CPC Available in IPC and CPC
- F25B 41/36 with the valve member being actuated by bimetal elements or shape-memory elements influenced by fluids, e.g. by the refrigerant since 2021 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F25,2013–2023, worldwide · Source: EPO PATSTAT
- HAIER SMART HOME 13,215
- LG ELECTRONICS KR 8,561
- MIDEA 7,315
- GREE ELECTRIC APPLIANCES 6,041
- HEFEI MIDEA REFRIGERATOR COMPANY 5,211
- MITSUBISHI ELECTRIC CORPORATION JP 4,905
- HEFEI HUALING COMPANY 4,633
- BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,697
- QINGDAO HAIER INTELLIGENT TECHNOLOGY RESEARCH ANDDEVELOPMENT COMPANY 3,376
- HAIER SMART HOME CN 3,265
Top Applicants (CPC)
Class F25,2013–2023, worldwide · Source: EPO PATSTAT
- LG ELECTRONICS KR 9,415
- HAIER SMART HOME 8,015
- MITSUBISHI ELECTRIC CORPORATION JP 5,758
- BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,827
- MIDEA 3,769
- GREE ELECTRIC APPLIANCES 3,417
- HAIER SMART HOME CN 3,403
- SAMSUNG ELECTRONICS COMPANY KR 3,329
- DAIKIN INDUSTRIES JP 2,908
- HEFEI MIDEA REFRIGERATOR COMPANY 2,186